[Python-Dev] the not operator (and the __not__ special method)
Aahz
aahz@pythoncraft.com
Thu, 3 Oct 2002 19:22:15 -0400
On Thu, Oct 03, 2002, Brian Quinlan wrote:
>
> > shows that python doesn't call the __not__ special method
> > in a 'not' operator statement.
>
> Python calls the special __nonzero__ method so check the truth value of
> an object.
Mark McEahern provided the full answer: Python uses __len__, too.
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